Wives & the Sabbath

QUESTION: In the fourth commandment, Ex. 20:8-12, why is the wife omitted from the list of those who are forbidden to work on the Sabbath, neither "thou, nor thy son, nor thy daughter, nor thy man servant, etc."?

ANSWER: It is not because she must get breakfast, dinner and supper on the Sabbath, so that the saying is true, "woman's work is never done," but it is because she is included in the "thou" where she is regarded as sharing the hardship of the household on a level with her husband just as she is in the fifth commandment, "Honor thy father and thy mother."

— Steele's Answers p. 270.